Rotary brush



C. E. FROST.

ROTARY BRUSH.

APPLICATION FILED ocT. 28, I9I8.

41,3417', 1 58 Patented uly 20, 1920.

'UNITED STATES PATENT OFFICE;

CLINTON E. FROST, 0F EAST CLEVELAND, OHIO, ASSIGNOR T0 THE CLEVELAND OSBORN MANUFACTURING COMPANY, OF CLEVELAND, OHIO, A CORPORA..

rvrioiv or cino.

i ROTARY BRUSH'.

Patented July 20, 1920-- Application filed October 28, 1918. Serial N0. 259,947.

To all ywlw/a 'it may concern.'

Be it known that I, CLINTON E. F Rosi, a citizen of the United States, and a resident of East Cleveland, county of Cuyahoga, and State of Ohio, have invente a new and useful Improvement iii Rotary Brushes, of which the following is a specification, the principle of the invention being herein explained and the best inode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The present improvements, relating, as indicated, to rotary brushes, have regard more especially to a brush of this type wherein the brushing material is supported so as to present-a more or less cup-sha 2e, z'- e., the brush section has the form, in w ole or part, of a cylinder', oi', more accurately, of the frustuni of a cone. A brush of this form l have found. possesses marked utility over any other type of brush on the market, for scouring or cleaning metal castings, the brush material in such case of course being strands of tempered steel wire, of such di-y ameter as to render them quite stiff. A brush of the form indicated, when properly mounted and held on a spindle, is not only extremely efficacious in cleaning smooth surfaces whether plain or curved, but also in getting around bosses and into angles, such as are found, for example, in crank case castings for motor engines, for the cleaning of which my improved brush has been found admirably adapted in extensive practical use.

The invention,l accordingly, consists of a novel form and construction of brushfsection, as also of a unique form of holder or mountingtherefor, whereby such sectionY may be properly secured to a spindle, either stationary or portable, the annexed drawing and the following description setting forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Figure i is a perspective view of a brush section of the improved form and construction referred to above; Fig. 2 is a plan view of a instal stamping in the form of a perforated strip utilized in the manufacture of such section; Fig. 3 is a transverse section of such stamping taken on the plane indicated by the line 3-3, Fig. 2; Figs. 4c and 5 are transverse sections through the brush section, indicating the manner in which the brush material and such stamping or strip, together with another component element, are assembled together; Fig. 6 is' a longitudinal axial section through a brush section and holder, or mount, therefor, whereby the'brush is attached to a spindle; and Fig. 7 is a View similar to that of Fig. 6, put showing a modified form of brush secion.

In the several figures of the drawing the 'brush material is shown as taking the form of wire strands l which are preferable, as previously indicated, where the brush is to be used for rough work such as cleansing castings. Such material, however, may consist of any of the usual brush materials, being folded over in loops as shown in Figs. 1, L and 5, which are thereupon inserted through successive apertures 2 in the stamped-up strip 3 in the fashion illustrated in Fig. 4. At the same time with the foregoing, a base member, preferably consisting of a wire 4C, is inserted or threaded through the successive loops until the latter are all strung thereon, following which the stamping 3 is bent along a central longitudinal axis by means of a press, or otherwise, until it assumes the form illustrated in Fig. 5. The result of the foregoing operations will be to tie or press the loops of the material together beyond the base member, the bentup stamping forming a lateral support for the strands whereby their outer ends are brought more or less closely together, while at the same time said strip serves to secure the inner looped ends of the strands firmly in place on the base member.

To form a brush section of the cup-shape illustrated in Figs. l and 2, a base member 4 and strip 3 of suihcient length, together with the requisite quantity of brush material, are assembled together in the fashion just described, and such base member and strip are thereupon bent into approximately circular form, with the strip dished or set at an angle to the plane defined by the ring base, whereby the brush material is disposed and held at a corresponding an le, thus givy ing the completed structure the orm desired.

In order to attach a section of the form just described to a driving spindle (Whether the latter be fixed or portable is a matter of indifference), two cup-shaped clamp members 6 and. 7 are utilized, both formed with central apertures adapted to lit over the reduced end 8 of the spindle, the larger outer member 6 abutting on a shoulder 9 on such spindle and being of the proper diameter and depth to inclose the base of the brush section. The inner member 7,

which is of general complementary form, is

thereupon forced and held in place by means of nuts 10 and 11 on the threaded end of the spindle, such inner member being formed `with a peripheral shoulder 12 disposedl to members is sufficient to prevent circumferential slippage. A key 13 or equivalent device will be provided to secure the members themselves non-rotatably upon the spindle.

If desired the construction of section above described, together with clamping means of the same form may be utilized to provide a brush of disk or cylindrical form, as illustrated in Fig. 7. In such event the stranded brush material is bent outwardly at approximately right angles at a point just beyond the outer edge of the stamping, so that the material therebeyond lies in a plane at right angles to the axis of the section. The clamping means utilized to attach such section to the spindle, include an outer member 14 of substantially the same form as before, while the inner member 15 ,is likewise of substantially the same form, having a peripheral shoulder 16 to engage the opposed edge of the stamping, and in addition having a second shoulder or -liange 17 which presses against the radially extending portion of the brush material so as to laterally support the same on one side just as the opposed edge of the other clamp member 14 supports such material on the other side.

A brush of the cup-shape illustrated in Figs. 1 and 2 obviously will have a considerably more extensive area of contact with any smooth surface, whether entirely fiat or not. At the same time it can be inserted into angles and corners much moreV eiiectively than a brush of the familiar type, while by having its center clear or open it will entirely surround a boss or similar projection, and thus be able to operate not only on the sides of the latter, but in the corners and angles thereof as well.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the'means stated by an of the following claims or the equivalent of such stated means beemployed.

I therefore particularly point out and distinctly claim as my invention 1. s an article of manufacture, a brush section comprising a base ring, brush material looped upon said ring, and a perforated member of U-shape in cross-section laterally engaging said material, the loops of material pasisng through the perforations in said member and the latter being dished so as to maintain said material at an angle to the plane deiined by said ring.

2. As an article of manufacture, a brush section comprising a base ring, brush material looped upon said ring, and a perforated metal stamping of U-shape in cross-section laterally engaging said material, the loops of material passing through the perforations in said stamping and the latter being dished so as to maintain said material at an angle to the plane defined by said ring.

3. The combination with a spindle, of complementary cup-shaped clamp members adapted to be terminally secured to said spindle, and a brush section comprising a base ring, brush material looped upon said ring, and a perforated member of U-shape in cross-section laterally engaging said material, the loops of material passing through the perforations' in said member and the latter being dished so as to maintain said material at an angle to the plane defined by said ring, said brush section being held between said clamp members with its open face directed away from said spindle.

4. The combination with a spindle, of complementary cup-shaped clamp members adapted to be terminally secured to said spindle, and a brush section comprising a base ring, brush material looped upon said ring, and a perforated member of U-shape incross-section laterally engaging said material, the loops of material passing through the perforations in said member and the latter vbeing dished so as to maintain said material at an angle to the plane defined by said ring, said brush section being held between said clamp members with its open face directed away from said spindle, and said clamp members interengaging with said perforated member to secure said brush section against endwise movement.

5. The combination with a spindle, of complementary cup-shaped clamp members adapted to be terminally securedA to said spindle, and a'brush section comprising a base ring, brush material loopedupon said ring, and a metal stamping of U-shape in said spindle and said inner clamp member cross-section laterally engaging said matehaving u shoulder adapted to engage with rial, said stamping being dished so as to said stamping to secure said brush section l0 maintain said material at an angle to the against end-Wise movement.

plane defined by said ring, and said brush Signed vby me this 26th day of October, section being held'between said clamp mem- 1918. l

bers with its open face directed away from CLINTON E. FROST. 

